ELECTROMECHANICAL LATCH Russian patent published in 2022 - IPC E05B47/02 

FIELD: security technology.

SUBSTANCE: electromechanical latch belongs to the field of security technology, in particular to locking devices controlled by electronic equipment, and can be used to lock doors in order to exclude the possibility of unauthorized access. The electromechanical latch contains an electromagnet (19) with a L-shaped magnetic circuit (20). On the L-shaped part, made in the form of a cover of the lower housing (1), there is a fixed anchor (23) with a compression spring (25) located in it. The top cover (30) is mounted on bushings (28), (29) with a screw connection. The movable anchor (14) is located with the possibility of rotational movement in the opening of the body (12) on the U-shaped side (2) of the body (1). The latch (35) is made in the form of a cylinder with a rectangular groove forming the back surface of the groove (36) and the fixing surface. On the latch bar (48), the bar (49) is reduced in the form of a triangular prism with a rectangular notch of the bar (50) located on both sides of the bar (49) reduction in the center of the latch bar (48). The axle (55) is installed in the holes of the axle (9) and (10) of the body (1) and fixed with lock washers. A torsion spring (60) is installed on the axis (55), the first (61) end of which is located in the hole of the body (1), and the second (62) - in the hole of the torsion spring 47. The latch plate (63) contains two holes with bulges (64) and (65) and fixed with them in the fixing holes (7) and (8). The latch (36) is mounted on the axis (55) with the possibility of rotation in the notch of the bar (50). In the closed state of the latch, with the electromagnet (19) turned on, the movable anchor (14) is in a position where the end surface of the movable anchor (14) abuts against the vertical surface of the lowering of the latch (41). In the open position of the latch, with the electromagnet (19) de-energized, the movable armature (14), under the action of the compression spring (25), abuts against the lower surface of the upper cover (30). The end surface of the movable anchor (14) is located above the vertical surface of the lowering of the latch (41). The latch is installed in the door box with a lock having an oblique movable bolt. In the closed state of the door, the bolt falls into the cavity formed by the surface of the fixing groove (38) and the outer surface of the lowering of the bar (49). In the closed state of the latch, with the electromagnet (19) turned on, the rotation of the latch (35) is excluded by the stop of the surface of the end anchor of the movable latch (41) lowering into the vertical surface, which makes it impossible to open the door. To open the door, the electromagnet (19) is de-energized, the movable anchor (14) turns under the action of the compression spring (25) and rests with the face of the surface of the end movable anchor (14) against the lower surface of the top cover (30). In this case, the end surface of the movable anchor (14) is located above the vertical surface of the lowering of the latch (41), making it possible to turn the latch (35) on the axis (55). Under the action of the door opening force applied by the bolt to the surface of the fixing groove (38), the latch (35) rotates and the lock bolt slides along the beveled surface of the fixing groove (38), chamfer (68), then along the overlay (63).

EFFECT: simplified technical implementation of the latch due to a smaller number of technologically easy-to-manufacture parts, simplified installation without opening the front part of the door frame, increased vandal resistance of the latch due to its hidden placement in the door frame.

1 cl, 3 dwg